Refuse-burning furnace



May 6 1924.

. i l o. N G 0.......a..`

2 sheets-sheet 1 w. F. -TROTTER REFUSE BUNING FURNACE o S5 S3 Q G )V/fer 77 Filed June 27 May 's 1924.

W. F. TROTTER REFUSE BURNING FURNACE m mm /////Y/////// w. Tf A Y Patented May 6, 1924.

UNETED STATES l r1,492,820 PATENT' orifice. 4

WALTER F. TROTTER, ,OF CINCINNATI, OHIO, ASSIGNR T0 DETROIT STOKER .'CMPANY,

or' DETROIT, MICHIGAN, A c

ORPORATION OF MICHIGAN.

`Imerese-Isnannve FURNACE.

appncationlied June 27, 1.921. serial No. 439,622.

To all whom it may concern.'

Be it known that I, WALTER F TRoTTnR, a citizen o-f the United States ofAmerica, residing `at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Refuse-Burning Furnaces, 0f Whichthe following is a specification, reference being had therein to the accompanying drawings. The invention relates to refuse 'burning furnaces and has for its object the adapting of an automatic Stoker furnace to the alternative use of burning refuse or oper- `ating with other fuels. To this end the Ainvention consists in the peculiarconstruction of air tuyres and means for controlling the same, as hereinafter set forth. y 5 In the drawings: Figure l is a cross-section through the furnace; l

Figure 2 is a sectional planview thereof; Figure 3 is a sectional view taken on line 3 3 of Figure 2; j

Figure 4 is a detail perspective [View of one of the tuyre blocks detached and show'- ing parts broken away;

Figure 5 1s an enlarged 'fragmentary sec-` tional view of one of the corner blocks.

A is the front wall, B the sidewall and C the rear wall of Va furnace which is provided with any suitable construction 'of grates and stoker. AS shown, the stolzer comprises Ia trough-shaped retort D and grate bars E extending from said retort to. wards the side walls yofthe furnace, over which the fuel lifted from 4the retort is fed to the ash holders F. 'f

Where the furnace is designed for the burning of refuse, it is preferably provided with closed grates to prevent the. sifting of unburnt material between the same and this necessitates the supply of air through some other channel. I have therefore arranged air tuyres in the side wall B of the furnace, which extend along the same in a recess therein and in a position just above the ash holder. These tuyeres occasionally burn out and must be renewed and I have devised a construction which permits of detachment and replacement.

In detail, the tuyres are formed of hollow blocks or sections G, which, as shown in Figure 4, are of substantially rectangular form open at their opposite ends and having laterally discharging ports H in the side i' towards the furnace chamber. lThe blocks are interlockingly engaged with each other by a flange I at one. end thereof eX- tending inward into the adj acent,l block. The opposite ,end of the block has a narrow portion J for receiving said ange and in- Ward from this narrow portion the block is cut away on an incline K. This permits of swinging `each block into and outfof engagement with adjacent blocks without disturbing the latter, as indicated in dotted lines at L in Figure 2. .The blocks are also reinforced by longitudinally extending ribs BI cast integral therewith and projecting inward, theseiserving not only to reinforce the blocks but also to assistin conductingffaway the lheat.

. Atthe forward and rearendsof thel furnace hollow blocks ofi similar form but without the ports H are employed, as indi'-v cated at N and O.v Similar'blocks `extend lacross the rear wall of the. furnace, asfindiV cated at P, and `a corner block Q forms the connection therebetween. Rl is a port in the rear wall located belowthe grates and cornmunicating with the sections P, whereby `air may be fed fromsaid port through the entire series of. tuyres. To control `the air supply, a damper or shut-olf valve'is arranged n the conduit, preferably in the corner block Q and which, assho-wn, cornprises a swinging gate valve S pivotally mounted on a pin T and connected by the apertured ears Uwith a rod V extending through the blocks G to :the front of the furnace.. Thus by adjusting'the rod V longitudinallv Ithe damperY may be eitherA opened or closed or adjusted to any desired position for restricting the draft.

-With the construction as vdescribed the` refuse is' fed into the furnace chamber from a feed port (not shown) at the top and will fall upon thegrates and burning fuel thereon. The air which is admit-ted through the tuyres will be directed over this refuse and will support combustion, the amount being regulated by the rod V and damper S. If at any time one or more of the tuyre sections burns out, it can be quickly pulled out of the recess 4and replaced by a new section.

While I have described the furnace as particularly adapted for refuse burning, the arrangementA of the tuyre or air channel labove the grates and in the wall, whichy is adjacent to the ash discharge, is advantageous where other fuels'are used. Thus the discharge of air at this point not only provides warm air for supporting combustion, but it also serves to cool the wall and to prevent the adhesion of clinkers thereto.

What I claim as my invention is:

l. In a furnace, the combination with a furnace wall, of a tuyre located in a recess in said wall comprising a plurality of re# movable hollow substantially rectangular open-ended sections engaging each other at the ends thereof and having laterally opening ports, each of said sections being cut away at one end to provide forclearance for detaching the same without disturbing the adjacent sections. 2. vIn a furnace, the combination with a wall thereof, of a tuyere located4 in a recess in said wall comprising a plurality of re- .movable hollow substantially rectangular open-ended sections engagingeach other at theends thereof and providing a continuous face adjacent tol they furnace chamber with laterally opening ports therethrough, each of said blocks being obliquely cut away at one end in the portion within the recess to provide clearance for swinging said block outward without disturbing the adjacent blocks.

3. In a furnace, the combination with a wall thereof, of a tuyreflocated in a recess in said wall comprising a series of substantially rectangularll hollow open-ended sections, each section having at one end thereof a flange for engaging the recess of an adjacent section and at its opposite end a narrow portion for being engaged by a similar flange on the adjacent section, said section at the latterl end being vcut away obliquely toA provide for the swinging of the section outward without disturbance lof adjacent sections.

4. In a furnace, the combination with a furnace wall, of a tuyre located in a recess in said wall comprising a plurality of hollow openended sections provided withports .for discharging` air into the furnace chamber, a damper locate in one of said sections for cutting off or restricting air communication, and a rod extendingthrough a plurality of sections adapted to actuate said damper.

5. In a furnace, the combination with a furnace wall, of a tuyre located in a recess in said wall comprising a plurality of hollow open ended sections having laterally opening ports, each of said sections being cut away at one end to provide clearance for detaching the same without disturbing the adjacent sections, each of said sections also having a projection at the opposite end extending within the adjacent section.

6. In a furnace, the combination with a wall having a recess therein, of a tuyre located in said recess and comprising ai series of independently removable hollow open ended sections interlocking each othei` at their ends and having lateral. ports, a damper in one of said sections, and removable operating means for said damper extending through the other sections, said operating means normally preventing the removal of said sections from the recess in said Wall.

7.`In a furnace, the combination with a wall having a recess therein, of a tuyre located in said recess and comprising a series of hollow open-ended sections arranged end to end and having laterally opening ports, a damper in one of said sections, and means extending through the other sections for normally holding said sections together and for operating said damper.

8. In a furnace, the combination withl a wall having a recess therein, of a tuyre located in said recess and comprising a series of removable hollow interlocking sections having laterally opening ports, a damper in one of said sections, and a removable rod extending through the other sections for operating said damper, saidrod normally pre'- venting removal of said sections from the recess in said wall.

9. In a furnace, the combination with aL furnace wall, of a tuyre located in a recess in said wall and including a plurality of independently removable hollow open ended sections interlocking each other at their en-ds and having laterally opening ports.

In testimony whereof I afhx my signature.

WALTER F. TROTTER. 

